High temperature deformation behavior of activated sintered W powder compacts was investigated. The compression tests were carried out in the temperature range between 900 and 110 at the strain rate of . The sintered specimens of Ni-doped submicron W powder compacts showed decrease in W grain size with increasing the Ni content. As the result, the flow stress was significantly increased with increasing the Ni content. We obtained Ni-activated sintered W compacts with the relative density of 94 l％and the average grain size of less than 5. A moderate true strain up to 0.60 was obtained without fracture even at 110 with the strain rate of for the activated W compact despite adding the 1.0 wt％Ni to submicron W powder.

The electrical and thermal conductivity of W-Cu composites were investigated as a function of the W-particle size and W-W contiguity. Powder mixtures were prepared by ball milling or mechanical alloying process, and then sintered at various temperatures. The electrical conductivity of sintered composite was increased with decreasing W grain size. Dependence of electrical conductivity on the W grain size was explained by the W-W contiguity concept. The thermal conductivity was increased with increasing the temperature up to but decreased at the temperature above Also, thermal conductivity value was influenced by the W particle size. Change of thermal conductivity in W-Cu composites was discussed based on the observed microstructural characteristics and theoretical considerations.

The production of micro components is one of the leading technologies in the fields of information and communiation, medical and biotechnology, and micro sensor and micro actuator system. Microfabrication (micromachining) techniques such as X-ray lithography, electroforming, micromolding and excimer laser ablation are used for the production of micro components out of silicon, polymer and a limited number of pure metals or binary alloys. However, since the first development of microfabrication technologies there have been demands for the cost-effective replication in large scale series as well as the extended range of available material. One such promising process is micro powder injection molding (PIM), which inherits the advantages of the conventional PIM technology, such as low production cost, shape complexity, applicability to many materials, applicability to many materials, and good tolerance. This paper reports on a fundamental investigation of the application of W-Cu powder to micro metal injection molding (MIM), especially in view of achieving a good filling and a safe removal of a micro mold conducted in the experiment. It is absolutely legitimate and meaningful, at the present state of the technique, to continue developing the micro MIM towards production processes for micro components.

The objectives of this study are to analyze life satisfaction between agricultural and non-agricultural households using 1~4th KReIS (Korean retirement and income study) data, to investigate whether to affect on life satisfaction according to the employment industry of householder. and to examine various determinants of life satisfaction between agricultural and non-agricultural households. The summary of analysis results is as follows. First, life satisfaction is influenced by economic value. Also it is examined that both physical and mental health have a significant effect for life satisfaction. Especially, it is analyzed that the effect of mental health is larger than one of physical health for life satisfaction. In addition, it is investigated that life satisfaction of single-person households is higher than two or more person households. Second, there was significant difference between agricultural and non-agricultural households in life satisfaction. It was proved that life satisfaction of agricultural households is higher than non-agricultural ones. As a result, it is confirmed that life satisfaction is influenced by industrial characteristic and mental health rather than another determinants.

원예치료 연구 방향 설정에 필요한 자료 확보 측면에서 2002년 부터 2011년까지 원예치료, 작업치료, 미술치료, 음악치료 관련 학 회지에 게재된 논문 910편을 대상으로 연구유형, 대상자 및 프로그 램을 비교분석 하였다. 학술지 게재 논문은 2002년에 54편(5.9%), 2006년에는 84편(9.2%), 2011년에는 134편(14.7%)을 나타내어 대체치료 관련 연구가 증가하는 경향을 보였다. 연구 유형은 실험 연구가 많아 원예치료는 76.1%, 미술치료는 74.7%, 작업치료는 68.3%, 음악치료는 57.0%였다. 실험 논문에서 대상자의 증상은 원예치료 및 미술치료의 경우 정신지체장애인이 각각 32.6%, 11.4%로 가장 많았으며 작업치료는 뇌졸중이 24.8%, 음악치료는 우울증이 15.1%로 가장 많았다. 실험 논문에서 대상자의 성별은 여성이 52.1-55.1%로 많았으며, 연령은 19세 이하가 가장 많아 미 술치료는 49.5%, 음악치료는 47.2%, 원예치료는 44.2%, 작업치 료는 28.0%였다. 실험 논문에서 프로그램 당 대상자 수가 10명 이 하인 논문 편수 비율은 원예치료의 경우 59.3%, 미술치료는 72.9%, 음악치료는 58.5%였으며 작업치료는 36명 이상이 40.9% 였다. 실험 논문에서 프로그램 회기 수가 20회 이하인 비율은 원예 치료의 경우 64.0%, 작업치료는 44.0%, 미술치료는 76.2%, 음악 치료는 68.0%였다. 실험 논문에 사용된 측정 및 평가 도구의 사용 비율은 원예치료의 경우 자아존중감 측정지가 21.4%, 작업치료와 미술치료에서는 관찰일지가 각각 44.5%, 15.9%, 음악치료에서는 비디오 녹화가 21.3%로 가장 높았다. 이와 같이 대체 치료법에 따 라 특성 차이가 있으므로 적용 시는 이를 고려해야 할 것이다.